Crothers Woods is a 52-hectare mature maple-beech-oak woodland located in the Don River valley. Many trees in Crothers Woods are more than a century old, with parts of the forest remaining in much the same condition as it was before European settlement. In 1995, the Toronto and Region Conservation Authority (TRCA) designated this site as an Environmentally Significant Area due to its diverse, mature and relatively undisturbed forest and the presence of herbaceous plants and tree species that are rare in the Toronto region.